<!DOCTYPE html>
<html class="reftest-wait">
<head>
<style type="text/css">
#inline-block {
 display: inline-block;
 margin: 10px 0;
 background-color: green;
}
#block {
 margin: 10px 0;
 background-color: lightgreen;
}
</style>
<script type="text/javascript">
function test() {
 document.getElementById('block').style.display = 'block';
 document.documentElement.removeAttribute('class');
}
document.addEventListener('MozReftestInvalidate', test);
</script>
</head>
<body>
<div id="inline-block"><span id="block">Hello Kitty</span></div>
</body>
</html>